But logic is not all, one needs one's heart to follow an idea.

If you think you understand quantum mechanics, you don't understand quantum mechanics.

Our responsibility is to do what we can, learn what we can, improve the solutions, and pass them on.

It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it's wrong.

If you can't explain something to a first year student, then you haven't really understood .

God was invented to explain mystery. God is always invented to explain those things that you do not understand.

Nature uses only the longest threads to weave her patterns, so that each small piece of her fabric reveals the organization of the entire tapestry.

My rule is, when you are unhappy, think about it. But when you're happy, don't. Why spoil it? You're probably happy for some ridiculous reason and you'd just spoil it to know it.

Religion is a culture of faith; science is a culture of doubt.

The only way to deep happiness is to do something you love to the best of your ability

Einstein was a giant. His head was in the clouds, but his feet were on the ground. But those of us who are not that tall have to choose!

Treasure the magic moments for the gems they are.

Boss may be on, but leader can be anyone.

In modern pharmacology it's so clear that even if you have a fixed dose of a drug, the individuals respond very differently to one and the same dose.

The whole purpose of writing a book is to be understood - if other people write about you, they try to guess why you did things, or they hear things from other people.

The country's top chefs, designers, media personalities and businesses are part of this dynamic city. We know that Chicagoans are used to the highest standards.

Never try to negotiate with anyone after he or she has eaten. People are best persuaded on an empty stomach. And forget power breakfasts. There is no convincing anyone of anything before 10 A.M.

Walk away from your own preoccupations . . . and see the perishing multitudes.

I didn't know how to deal with success. If there was a Rock Star 101, I would have liked to take it. It might have helped me.

Shopping, true feminine felicity!

The reactions music evokes are not feelings, but they are the images, memories of feelings.